US7456858B2 - Distributed MCU - Google Patents

Distributed MCU Download PDF

Info

Publication number
US7456858B2
US7456858B2 US10/856,472 US85647204A US7456858B2 US 7456858 B2 US7456858 B2 US 7456858B2 US 85647204 A US85647204 A US 85647204A US 7456858 B2 US7456858 B2 US 7456858B2
Authority
US
United States
Prior art keywords
mcu
mcus
eps
list
allocated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US10/856,472
Other languages
English (en)
Other versions
US20050007446A1 (en
Inventor
Thies Schrader
Axel Dahl
Magnus Rekkedal
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tandberg Telecom AS
Original Assignee
Tandberg Telecom AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tandberg Telecom AS filed Critical Tandberg Telecom AS
Assigned to TANDBERG TELECOM AS reassignment TANDBERG TELECOM AS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DAHL, AXEL, REKKEDAL, MAGNUS, SCHRADER, THIES
Publication of US20050007446A1 publication Critical patent/US20050007446A1/en
Application granted granted Critical
Publication of US7456858B2 publication Critical patent/US7456858B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/14—Systems for two-way working
    • H04N7/15—Conference systems
    • H04N7/152—Multipoint control units therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/562—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities where the conference facilities are distributed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges
    • H04M3/42—Systems providing special services or facilities to subscribers
    • H04M3/56—Arrangements for connecting several subscribers to a common circuit, i.e. affording conference facilities
    • H04M3/567—Multimedia conference systems

Definitions

  • the present invention relates generally to video conferencing network devices and more specifically to a method and a device for automatic generation and allocation of optimized setup of multiple end points to multi site connection units in a distributed video conference.
  • the invention further relates to a method and device for monitoring and administering a concept of a distributed MCU, including a master MCU and one or several slave MCUs, connected together in a call in a distributed video conference:
  • Video- and audio-conferencing is a technology used for communication over long distances. Due to many problems occurring during call setup and call-management, many solutions require conferencing administrators to setup and administrate the conference. To ease the job of call set-up and conference administration, many large organizations and service providers use a centralized server called a Multi-point Control Unit (MCU).
  • MCU Multi-point Control Unit
  • a MCU is a server used to handle calls with multiple participants, or to allow central call management of calls from 2 to n participants.
  • An end point is defined as the video/audio terminal/telephone or gateway used in a video conference.
  • conferencing administrators can control most aspects of the call from one single interface. As most MCUs allow multiple conferences, administrators can also monitor multiple calls from the same interface.
  • Polycom GMS allows monitoring of calls between end points only.
  • Polycom Conference Suite (AGT VCAS) allows monitoring of calls at a system by system level.
  • Forgent VNP allows monitoring of calls and call set-up at a system by system level.
  • TANDBERG Management Suite allows monitoring of calls at a system by system level.
  • U.S. Pat. No. 6,157,401 describes a gatekeeper used in a video conferencing system for controlling the alias addresses of EPs logging on the system. It is checked whether an address is a “compound address”, and if so ensure that the MCU allocates conference resources to a video conference among the participants thereby designated.
  • EP-1359708 describes a method for creating a video connection from a video communication terminal with other participants in a video conference.
  • US-2003/0147357 describes a method for calling video communication service by video communication terminal and associated message data form. More specifically it describes a method for setting up a videoconference by the use of MCUs and caller convening conference mode.
  • US-2002/0071026 describes an apparatus and method for incorporating virtual video conferencing environments. More specifically it describes an apparatus and method for determining if a user logging on to the system has designated an alternative environment other than a default environment normally detected by a camera device during the video conference. If this is the case, an environment processor obtains the environment from an environment database, and the video conference apparatus uses the designated environment. If it is not the case, the environment processor sends a listing of the possible environments, and the user can then select the preferred environment from this list. If a user does not wish to select an alternative environment, the default environment will be selected.
  • US-2002/0036707 describes a method for filtering artifacts from multi-threaded video.
  • U.S. Pat. No. 6,590,603 describes a system and method for managing streaming data.
  • TMS Forgent VNP and Polycom Conference Suite
  • MCU connections or monitoring the conference as one entity—just at a system by system level.
  • MCUs centralized servers
  • MCUs may have large size and cost due to the requirement to handle peek conditions.
  • MCUs are often over sized compared to average use and conference numbers. This is a requirement to handle peek conditions typically occurring during main business hours.
  • this problem is not due to the size of a single conference, but to the amount of conferences taking place.
  • point-to-point calls also require management, these must also be routed through the centralized server, requiring resources.
  • a centralized video- and audio-conferencing server is no different than other servers, in that if the server fails, all calls routed through the server will also fail, i.e. single point of failure.
  • the solution according to the invention has the following advantages:
  • MCU conference server
  • An object of the invention is to provide a method and device as mentioned in the introduction which overcomes the described disadvantages of the prior art.
  • a first aspect of the invention is therefore to provide a method and device for automatic generation and allocation of optimized setup of multiple end points (EPs) to multi site connection units (MCUs) in a distributed video conference system.
  • the method comprises a first step of estimating the number of MCUs needed, based on the number of EPs required to be connected in a video conference session, followed by a second step, checking that there is a sufficient number of MCUs available according to the estimation by allocating each EP to an MCU, and a last optimizing step with final allocation of EPs to MCUs, by connecting EPs to MCUs according to a weighting function.
  • the EPs and MCUs may in some cases be the same physical device.
  • a second aspect of the invention is to provide a method and device for monitoring and administering many video conference devices within a network.
  • the method comprises a first step of gathering and merging call information such as protocols and duration from the devices in the call, followed by checking whether the master device is capable of carrying out a specific command upon receiving an administration function, followed by checking whether the slave devices are capable of carrying out the specific command if the master device is not capable of performing said command, followed by checking whether the end point (EP) that the commands is going to be carried out on is capable of carrying out the specific command if the master or slave devices are not capable of performing this command.
  • the final step is to execute the command on the devices capable of carrying out the specific command.
  • a device can be any element used in the call setup of two or more video conferences, i.e. MCU, Gateway (connecting different networks together, e.g. IP and ISDN), Gatekeeper (act as the central control point and provides call control services to registered end points), and EP etc.
  • MCU Mobility Management Entity
  • Gateway connecting different networks together, e.g. IP and ISDN
  • Gatekeeper act as the central control point and provides call control services to registered end points
  • FIG. 1 is a schematic block diagram illustrating a call set-up between groups of systems
  • FIG. 2 is a schematic block diagram illustrating a call set-up with two available MCUs
  • FIG. 3A is a flow chart illustrating an implementation of the distributed call solution according to the inventive method.
  • FIG. 3B is the optimization part of the flow chart illustrated in FIG. 3A .
  • FIG. 1 shows an example of how a call can be set-up between a group of systems. Top left, three systems are connected to an external MCU A. Top right another three systems are connected to external MCU B. There is also a call between MCU A and B to transfer information between the two. At the bottom of the figure, an end point with a build in MCU has another two systems connected to it. This gives a total of nine end points connected to a single conference.
  • the first part of this invention is to route the call in such a fashion as to automatically connect all systems. This can be done with respect to different factors (call costs, quality, capabilities, etc.). This method allows the call to be set-up without having a centralized location.
  • the second and unique part of this invention is to have one or more services actively administrating and monitoring the systems in the configurations.
  • the administrator is then given a single interface to set-up, monitor and manage the call. For example to change the person having floor (whose audio and/or video is fed to all other participants) of the conference, request must be sent the MCU A, MCU B and the internal MCU. Instead of the solution used today—where the administrator must go into each of these units to change the call flow, the administrator changes this setting in one location, causing a chain of actions to be taken on the required units in the call—in such a way as the end users see the effect as if the call was administrated from a centralized MCU.
  • FIG. 2 illustrates an example of a call setup with two available MCUs. It shows how the inventive method sets up a distributed call. This example involves a call with 14 videoconference systems. Instead of the user having setup an entire distributed conference manually, the inventive method automatically generates an optimized cascaded multi-MCU solution when there are more conference systems than available resources on any single MCU.
  • FIG. 3A shows the processes involved in creating a distributed MCU call.
  • the method for automatic generation and allocation of optimized setup of multiple end points (EPs) to multi site connection units (MCUs) in a distributed video conference system comprises the steps.
  • the first step 100 is to generate an MCU priority list of the available MCUs based on a weighting function that in turn is based on any desirable characteristic or property of the MCUs and number of EPs. This can be the amount of available processing resources in the MCUs, and the bandwidth resources required for the MCUs to connect to the EPs. From this list, the MCU with the best weight is chosen as the master MCU.
  • the next step 110 is to estimate the number of MCUs needed, based on the number of EPs required to be connected in a current video conference session. From this it is checked in step 120 whether there are enough MCUs. If not, an error message will be displayed 140 , and the process of creating a distributed MCU call will stop. If there are enough MCUs, the process will continue with several substeps.
  • the first substep 130 is to add the required MCUs from the priority list generated in step 100 to a database “chosen” list containing the chosen MCUs.
  • the next substep 160 is to calculate the necessary links from the master MCU to the other MCUs in the MCU database list generated in step 130 .
  • substep 170 where the master MCU is allocated to the EP of the video conference leader (if any).
  • the video conference leader is the EP which is feeding audio and/or video to all other participant.
  • step 180 the next MCU in the “chosen” list generated in step 130 is processed.
  • the fist time this will be the master MCU, the second time it will be the MCU with the second best weight after the master MCU etc.
  • step 190 a calculation is performed, of a call weight for each EP where cost of a call between EP and MCUs is among factors included in the weight.
  • step 200 an EP priority list for each MCU is generated, i.e. the call weight of each EP to the different MCUs in the “chosen” list generated in step 130 .
  • step 210 it is checked whether there are remaining EPs in the EP priority list 10 generated in step 200 If not, all the end points in the EP priority list have been processed, and an optimization routine is initiated in step 300 . If this is successful, all the systems in the current video conference will be connected together in an optimal was.
  • the optimization routine is described in detail with reference to FIG. 3B in the following.
  • step 220 checking whether the current MCU processed according to step 180 is full. If it is not, the first EP in the EP priority list generated in step 200 is allocated to the current MCU. This is performed in step 230 followed by step 240 where the first EP is removed from the EP priority list.
  • the loop comprising the steps 210 , 220 , 230 and 240 are performed until all the EPs have been allocated to a MCU, or until the current MCU is full, i.e. its resources have been used. If this is the case step 250 will be performed.
  • step 250 a test of whether the “chosen” list generated in step 130 is empty is performed If not, step 180 described above will be entered again, followed by 190 , 200 etc. If the “chosen” list is empty, a check is performed in step 260 of whether a new MCU is available. If this is the case, all the allocated EP performed in step 230 are de-allocated in step 280 , and the process once again starts from step 160 after adding the new MCU to the “chosen” list. This is performed in step 150 . If a new MCU is not available, an error message will be generated in step 270 .
  • FIG. 3B shows the processes involved in optimizing the final distributed MCU route.
  • the optimization method is performed when all the EPs have been allocated to an MCU, i.e. no error messages have occurred.
  • the optimization method starts in step 400 by de-allocating EPs from all but the master MCU.
  • De-allocated lists are generated from the generated priority list of allocated EPs to MCUs performed in step 230 .
  • step 410 the next EP in the de-allocated list is located, and in step 430 the next MCU in the de-allocated list is located.
  • step 430 a route between the EP and the MCU is created. This is followed in step 440 by adding the route to a collection of routes.
  • step 450 it is checked whether the end of the de-allocated MCU list has been reached. If not step 420 will be entered again, and the steps 420 , 430 , 440 and 450 will be performed until a route between the current EP and the MCUs in the de-allocated list has been created. If the end of the de-allocated MCU list has been reached, a new test is performed in step 460 . In this step it is checked whether the end of the EP list has been reached. If not, the MCU de-allocated list is reset to first position in step 470 , and the next EP from de EP de-allocated list is located followed by the step 420 to 460 as described above. If step 460 reports that the end of the EP list has been reached, step 480 is entered.
  • step 480 the collection of routes obtained from going through steps 400 to 460 is sorted by lowest weight.
  • step 490 the next route between an EP and MCU in the sorted collection of routes is located, and in step 500 it is checked whether there are enough resources on the particular MCU. If not, the optimization process failed and the original solution as presented before entering step 300 is presented and executed. If there are enough resources on the particular MCU, step 520 will be entered.
  • step 520 the EP contained in the route is allocated to the MCU. This is followed by step 530 where this route is removed from the collection.
  • step 540 A check is performed in step 540 of whether there are more routes in the collection of routes. If this is the case, step 490 will once again be entered, and the following steps 500 to 530 will be performed until all the routes have been assessed.
  • the optimization process will end in step 500 .
  • the described method allows calls between video conference devices to be set-up in a cost effective way, without having a centralized location.
  • the invention also concerns a device for performing the automatic generation and allocation of optimized setup of multiple EPs to MCUs in a distributed video conference system according to the method described above.
  • a second object of the invention is to provide a method and device for monitoring and administering several video conference devices within a network.
  • a video conference device may be any device included in the setup of a video conference, e.g. an end point with or without internal MCU, gateway, gatekeeper, MCU etc.
  • the method comprises a first step of gathering and merging call information such as protocols and duration from the devices in the call. This is done by letting each video conference device make its support level for the different functions available to a cache to speed up processing time. This step is followed by checking whether the master device. (typically an MCU—the master device in this solution is either the master MCU in cascaded calls, the MCU in non-cascaded call (internal or external MCU) or the end point with the most capabilities in a point-to-point call) is capable of carrying out a specific command (e g. mute, floor, volume, etc.) upon receiving an administration function.
  • a specific command e g. mute, floor, volume, etc.
  • step of checking whether the slave devices are capable of carrying out the specific command if the master device is not capable of performing said command followed by checking whether the EP that the commands is going to be carried out on is capable of carrying Out the specific command if the master or slave devices are not capable of performing this command.
  • the final step is to execute the command on the devices capable of carrying out the specific command.
  • the monitoring and administering user interface is operatively connected to the videoconference devices, i.e. it is not necessary to perform these tasks from a centralised server.
  • the MASTER system is first checked (MCU). If the function cannot be carried out on the MASTER system, the system that the function is to be carried out on is checked (e.g. if the MCU does not support Mute, Mute will be executed on the site that is to be muted instead). If the other system is not in-house, the function fails (no system possible to execute function against).
  • mute with internal MCU
  • mute is controlled at the individual endpoint that one want to control, whereas continues presence, add/remove participant, mute (with external MCU) and floor control is done on the MASTER system (MCU—either internal or external).
  • TANDBERG systems support administration features in other ways than competitors (RadVision, Polycom, Ezenia).
  • the main clue is that each system makes available its support level for different functions, for gathering call information a union of the status of the individual systems is made (to optimize, in most cases one only ask the MASTER system for such information).
  • the presented solution gives administrators one screen and one way of controlling all conferences, weather they are point-to-point, internal MCU, external MCU or distributed/cascaded conferences. This then avoids the need for large MCUs that all calls must go through to be able to have the same amount of monitoring and administration capabilities.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Telephonic Communication Services (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Special Wing (AREA)
  • Small-Scale Networks (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
US10/856,472 2003-07-07 2004-05-28 Distributed MCU Active 2027-05-30 US7456858B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO20033106 2003-07-07
NO20033106A NO318974B1 (no) 2003-07-07 2003-07-07 Distribuert MCU

Publications (2)

Publication Number Publication Date
US20050007446A1 US20050007446A1 (en) 2005-01-13
US7456858B2 true US7456858B2 (en) 2008-11-25

Family

ID=27800784

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/856,472 Active 2027-05-30 US7456858B2 (en) 2003-07-07 2004-05-28 Distributed MCU

Country Status (9)

Country Link
US (1) US7456858B2 (ja)
EP (2) EP1895776B1 (ja)
JP (1) JP4378651B2 (ja)
CN (1) CN100499792C (ja)
AT (1) ATE381210T1 (ja)
DE (1) DE602004010676T2 (ja)
ES (1) ES2298758T3 (ja)
NO (1) NO318974B1 (ja)
WO (1) WO2005004481A1 (ja)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070206089A1 (en) * 2006-03-01 2007-09-06 Polycom, Inc. Method and system for providing continuous presence video in a cascading conference
US20090051756A1 (en) * 2007-02-14 2009-02-26 Marc Trachtenberg Telepresence conference room layout, dynamic scenario manager, diagnostics and control system and method
US20100097441A1 (en) * 2008-10-16 2010-04-22 Marc Trachtenberg Telepresence conference room layout, dynamic scenario manager, diagnostics and control system and method
US20100134589A1 (en) * 2003-11-05 2010-06-03 Huawei Technologies Co., Ltd. Videoconference system and management method thereof
US20100322112A1 (en) * 2009-06-21 2010-12-23 Emblaze-Vcon Ltd. System and Method of Multi-End-Point Data-Conferencing
US20130106989A1 (en) * 2011-11-01 2013-05-02 Teliris, Inc. Cloud-based interoperability platform for video conferencing
US20130215215A1 (en) * 2011-11-01 2013-08-22 Teliris, Inc. Cloud-based interoperability platform using a software-defined networking architecture
US8744065B2 (en) 2010-09-22 2014-06-03 Avaya Inc. Method and system for monitoring contact center transactions
US20140267573A1 (en) * 2013-03-15 2014-09-18 Cisco Technology, Inc. Selection of a Multipoint Control Unit (MCU) for a Video Meeting on a Network
US9065873B2 (en) 2012-10-18 2015-06-23 Cisco Technology, Inc. Reduction of chaining in conference sessions
WO2015105408A1 (en) 2014-01-08 2015-07-16 Wafina Sdn. Bhd. Self-learning and intelligent system for continually improving quality and performance of multimedia conference
US9118654B2 (en) 2013-10-11 2015-08-25 Edifire LLC Methods and systems for compliance monitoring in secure media-based conferencing
US9118809B2 (en) 2013-10-11 2015-08-25 Edifire LLC Methods and systems for multi-factor authentication in secure media-based conferencing
US9131112B1 (en) 2014-09-29 2015-09-08 Edifire LLC Dynamic signaling and resource allocation in secure media-based conferencing
US9137187B1 (en) 2014-09-29 2015-09-15 Edifire LLC Dynamic conference session state management in secure media-based conferencing
US9167098B1 (en) * 2014-09-29 2015-10-20 Edifire LLC Dynamic conference session re-routing in secure media-based conferencing
US9282130B1 (en) 2014-09-29 2016-03-08 Edifire LLC Dynamic media negotiation in secure media-based conferencing
US9602295B1 (en) * 2007-11-09 2017-03-21 Avaya Inc. Audio conferencing server for the internet
US9736312B2 (en) 2010-11-17 2017-08-15 Avaya Inc. Method and system for controlling audio signals in multiple concurrent conference calls
US9906570B2 (en) 2014-09-19 2018-02-27 Ricoh Company, Ltd. Session control system, communication terminal, communication system, session control method, and medium

Families Citing this family (48)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7492730B2 (en) 2005-04-19 2009-02-17 Polycom, Inc. Multi-site conferencing system and method
US7817180B2 (en) * 2005-04-28 2010-10-19 Apple Inc. Video processing in a multi-participant video conference
US9486408B2 (en) * 2005-12-01 2016-11-08 University Of Massachusetts Lowell Botulinum nanoemulsions
US20070133438A1 (en) * 2005-12-14 2007-06-14 Cisco Technology, Inc. Method and system for reserving resources in a conferencing system
US8699384B2 (en) * 2006-03-15 2014-04-15 American Teleconferencing Services, Ltd. VOIP conferencing
US7581038B1 (en) 2006-03-16 2009-08-25 Polycom, Inc. Multicast distribution over one or more addressable buses wherein a switch includes a remapping table for inputting address for one or more destinations
US7675537B2 (en) * 2006-03-31 2010-03-09 Polycom, Inc. System, method, and apparatus for extending wireless personal area networks using conferencing connection
CN101047828B (zh) * 2006-03-31 2011-05-25 联想(北京)有限公司 分布式会议系统
CN100438613C (zh) * 2006-04-05 2008-11-26 北京华纬讯电信技术有限公司 多媒体视频会议系统中音视频码流的传输方法
US8705558B2 (en) * 2006-06-01 2014-04-22 Cisco Technology, Inc. Swapping bandwidth reservations
US7937442B2 (en) * 2006-09-22 2011-05-03 Microsoft Corporation Multipoint control unit (MCU) failure detection and rollover
US8150917B2 (en) 2006-09-22 2012-04-03 Microsoft Corporation High availability conferencing
CN101179692B (zh) * 2006-11-08 2011-03-02 中兴通讯股份有限公司 一种视讯会议系统mcu资源调度方法
JP2008147877A (ja) * 2006-12-07 2008-06-26 Toshiba Corp 会議システム
US8208004B2 (en) * 2007-05-08 2012-06-26 Radvision Ltd. Device, methods, and media for providing multi-point video conferencing unit functions
US7921244B2 (en) * 2007-07-04 2011-04-05 Ours Technology, Inc. Data sharing and transfer systems and methods
US8217981B2 (en) * 2007-10-12 2012-07-10 Polycom, Inc. Configuring videoconferencing systems to create video sessions with realistic presence
TW200926833A (en) * 2007-12-03 2009-06-16 Nat Applied Res Lab Nat Ct For High Performance Computing Display system and display method capable of receiving multiple sources and with synchronous multiple outputs
US8319820B2 (en) * 2008-06-23 2012-11-27 Radvision, Ltd. Systems, methods, and media for providing cascaded multi-point video conferencing units
CN101515948B (zh) * 2009-03-31 2012-04-25 华为终端有限公司 分布式多点会议系统中的管理方法、装置及系统
CN101557497B (zh) * 2009-05-22 2011-12-28 华为终端有限公司 一种实现旁听会议的方法、终端及系统
US8319816B1 (en) * 2009-07-28 2012-11-27 Insors Integrated Communications Methods, systems and program products for efficient communication of data between conference servers
CN101674451B (zh) * 2009-09-27 2012-05-09 中兴通讯股份有限公司 控制多点视频会议的方法及系统及中控子系统及视频终端
JP5999873B2 (ja) * 2010-02-24 2016-09-28 株式会社リコー 伝送システム、伝送方法、及びプログラム
CN101848099B (zh) * 2010-03-19 2012-12-05 西安电子科技大学 网络会议系统及其会议实现方法
US8482593B2 (en) * 2010-05-12 2013-07-09 Blue Jeans Network, Inc. Systems and methods for scalable composition of media streams for real-time multimedia communication
CN101931782B (zh) * 2010-08-25 2015-08-12 中兴通讯股份有限公司 用于多点控制单元的流量处理方法和装置
CN102571526B (zh) 2010-12-08 2015-05-06 华为终端有限公司 会场带宽的调整方法、装置、会议终端和媒体控制服务器
CN102025971A (zh) * 2010-12-15 2011-04-20 广东威创视讯科技股份有限公司 一种视频会议媒体服务器资源的动态分配方法
CN102427518B (zh) * 2010-12-29 2013-07-10 南京联坤软件技术有限公司 按需组网视频会议系统
US8866873B2 (en) 2011-10-08 2014-10-21 Mitel Networks Corporation System for distributing video conference resources among connected parties and methods thereof
US8611877B2 (en) 2011-10-31 2013-12-17 Blackberry Limited Automatic management control of external resources
US9020119B2 (en) 2011-10-31 2015-04-28 Blackberry Limited Moderation control method for participants in a heterogeneous conference call
EP2587778B1 (en) * 2011-10-31 2017-07-19 BlackBerry Limited Automatic management control of external resources
CN102364935B (zh) * 2011-11-18 2013-06-05 苏州阔地网络科技有限公司 一种网络会议音视频传输方法及系统
GB2520451B (en) 2012-03-20 2015-09-30 Media Network Services As Data distribution system
CN104065682B (zh) * 2013-03-21 2017-10-10 赛恩倍吉科技顾问（深圳）有限公司 资料传输方法
CN103237026B (zh) * 2013-04-22 2016-09-14 张志涵 伴随呼叫触发附加信息交互的系统及其方法
KR20140140946A (ko) * 2013-05-30 2014-12-10 한국전자통신연구원 다지점 제어 장치 및 그의 서비스 제공 방법
CN105359513B (zh) * 2013-05-31 2018-07-03 维迪奥股份有限公司 用于视频会议中的房间系统配对的系统和方法
CN105379179B (zh) * 2014-02-10 2020-05-08 华为技术有限公司 一种多方实时通讯控制方法、装置及系统
CN103997617A (zh) * 2014-02-17 2014-08-20 宁波公众信息产业有限公司 一种视频调度的控制装置及方法
CN104980685B (zh) * 2014-04-14 2018-09-14 纬创资通股份有限公司 视频服务提供方法及视频服务提供系统
AU2015252947B2 (en) * 2014-05-01 2020-07-09 Anterios, Inc. Demonstrable efficacy across or within patient populations
JP6464696B2 (ja) 2014-11-26 2019-02-06 株式会社リコー 制御システム、通信システム、制御方法、及びプログラム
CN106714000A (zh) * 2015-07-14 2017-05-24 三亚中兴软件有限责任公司 会议终端权限的控制方法、系统及装置
CN107306315B (zh) * 2016-04-18 2020-09-29 华为技术有限公司 语音会议创建方法、会议服务器及系统
CN106851036B (zh) * 2017-01-20 2019-08-30 广州广哈通信股份有限公司 一种共线语音会议分散混音系统

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5473363A (en) * 1994-07-26 1995-12-05 Motorola, Inc. System, method and multipoint control unit for multipoint multimedia conferencing
US5594725A (en) 1995-12-28 1997-01-14 Vtel Corporation Process and system for video rate control in a multipoint video conference
US5737010A (en) * 1994-03-18 1998-04-07 Fujitsu Limited System for connection and disconnection in multipoint conference system of cascade configuration
US6157401A (en) 1998-07-17 2000-12-05 Ezenia! Inc. End-point-initiated multipoint videoconferencing
WO2001035655A2 (en) 1999-11-08 2001-05-17 Polycom Israel Ltd. A method for controlling one or more multipoint control units with one multipoint control unit
US20020036707A1 (en) 2000-05-01 2002-03-28 Qunshan Gu Filtering artifacts from multi-threaded video
US20020071026A1 (en) 1998-10-16 2002-06-13 Sanjay Agraharam Apparatus and method for incorporating virtual video conferencing environments
WO2002060126A1 (en) 2000-11-02 2002-08-01 Polycom, Inc. Conferencing network resource optimization for multi-point conferences
US20030081112A1 (en) 2001-10-31 2003-05-01 Vtel Corporation System and method for managing streaming data
US20030147357A1 (en) 2001-02-06 2003-08-07 Huawei Technologies Co., Ltd Method for calling video communication service by video communication terminal and associated message data form

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5737010A (en) * 1994-03-18 1998-04-07 Fujitsu Limited System for connection and disconnection in multipoint conference system of cascade configuration
US5473363A (en) * 1994-07-26 1995-12-05 Motorola, Inc. System, method and multipoint control unit for multipoint multimedia conferencing
US5594725A (en) 1995-12-28 1997-01-14 Vtel Corporation Process and system for video rate control in a multipoint video conference
US6157401A (en) 1998-07-17 2000-12-05 Ezenia! Inc. End-point-initiated multipoint videoconferencing
US20020071026A1 (en) 1998-10-16 2002-06-13 Sanjay Agraharam Apparatus and method for incorporating virtual video conferencing environments
WO2001035655A2 (en) 1999-11-08 2001-05-17 Polycom Israel Ltd. A method for controlling one or more multipoint control units with one multipoint control unit
US20020036707A1 (en) 2000-05-01 2002-03-28 Qunshan Gu Filtering artifacts from multi-threaded video
WO2002060126A1 (en) 2000-11-02 2002-08-01 Polycom, Inc. Conferencing network resource optimization for multi-point conferences
US20030147357A1 (en) 2001-02-06 2003-08-07 Huawei Technologies Co., Ltd Method for calling video communication service by video communication terminal and associated message data form
EP1359708A1 (en) 2001-02-06 2003-11-05 Huawei Technologies Co., Ltd. Method used by terminal of video conference for calling in video conference service and associated message data form
US20030081112A1 (en) 2001-10-31 2003-05-01 Vtel Corporation System and method for managing streaming data
US6590603B2 (en) 2001-10-31 2003-07-08 Forgent Networks, Inc. System and method for managing streaming data

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Procedures for establishing communication between three or more audiovisual terminals using digital channels up to 1920 kbit/s, H.243 (02/000) ITU-T Standard Superseded (S), International Telecommunication Union, Geneva, Feb. 17, 2000, pp. 1-52. XP 17404762A.
System for establishing communication between audiovisual terminals using digital channels up to 2 Mbit/s, H.242 (May 1999), ITU-T Standard Superseded (s), International Telecommunication Union, Geneva, May 1, 1999, pp. 1-77, XP017401349A.

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100134589A1 (en) * 2003-11-05 2010-06-03 Huawei Technologies Co., Ltd. Videoconference system and management method thereof
US8310518B2 (en) * 2003-11-05 2012-11-13 Huawei Technologies Co., Ltd. Videoconference system and management method thereof
US20070206089A1 (en) * 2006-03-01 2007-09-06 Polycom, Inc. Method and system for providing continuous presence video in a cascading conference
US20090051756A1 (en) * 2007-02-14 2009-02-26 Marc Trachtenberg Telepresence conference room layout, dynamic scenario manager, diagnostics and control system and method
US8130256B2 (en) * 2007-02-14 2012-03-06 Teliris, Inc. Telepresence conference room layout, dynamic scenario manager, diagnostics and control system and method
US9602295B1 (en) * 2007-11-09 2017-03-21 Avaya Inc. Audio conferencing server for the internet
US20100097441A1 (en) * 2008-10-16 2010-04-22 Marc Trachtenberg Telepresence conference room layout, dynamic scenario manager, diagnostics and control system and method
US8355040B2 (en) 2008-10-16 2013-01-15 Teliris, Inc. Telepresence conference room layout, dynamic scenario manager, diagnostics and control system and method
US20100322112A1 (en) * 2009-06-21 2010-12-23 Emblaze-Vcon Ltd. System and Method of Multi-End-Point Data-Conferencing
US9357171B2 (en) 2009-06-21 2016-05-31 Clearone Communications Hong Kong Ltd. System and method of multi-end-point data-conferencing
US8437282B2 (en) 2009-06-21 2013-05-07 Clearone Communications Hong Kong Limited System and method of multi-endpoint data conferencing
US8744065B2 (en) 2010-09-22 2014-06-03 Avaya Inc. Method and system for monitoring contact center transactions
US9736312B2 (en) 2010-11-17 2017-08-15 Avaya Inc. Method and system for controlling audio signals in multiple concurrent conference calls
US20130215215A1 (en) * 2011-11-01 2013-08-22 Teliris, Inc. Cloud-based interoperability platform using a software-defined networking architecture
US20130106989A1 (en) * 2011-11-01 2013-05-02 Teliris, Inc. Cloud-based interoperability platform for video conferencing
US9065873B2 (en) 2012-10-18 2015-06-23 Cisco Technology, Inc. Reduction of chaining in conference sessions
US9215414B2 (en) * 2013-03-15 2015-12-15 Cisco Technology, Inc. Selection of a Multipoint Control Unit (MCU) for a video meeting on a network
US20140267573A1 (en) * 2013-03-15 2014-09-18 Cisco Technology, Inc. Selection of a Multipoint Control Unit (MCU) for a Video Meeting on a Network
US9118809B2 (en) 2013-10-11 2015-08-25 Edifire LLC Methods and systems for multi-factor authentication in secure media-based conferencing
US9338285B2 (en) 2013-10-11 2016-05-10 Edifire LLC Methods and systems for multi-factor authentication in secure media-based conferencing
US9118654B2 (en) 2013-10-11 2015-08-25 Edifire LLC Methods and systems for compliance monitoring in secure media-based conferencing
WO2015105408A1 (en) 2014-01-08 2015-07-16 Wafina Sdn. Bhd. Self-learning and intelligent system for continually improving quality and performance of multimedia conference
US9906570B2 (en) 2014-09-19 2018-02-27 Ricoh Company, Ltd. Session control system, communication terminal, communication system, session control method, and medium
US9131112B1 (en) 2014-09-29 2015-09-08 Edifire LLC Dynamic signaling and resource allocation in secure media-based conferencing
US9137187B1 (en) 2014-09-29 2015-09-15 Edifire LLC Dynamic conference session state management in secure media-based conferencing
US9167098B1 (en) * 2014-09-29 2015-10-20 Edifire LLC Dynamic conference session re-routing in secure media-based conferencing
AU2015230836B1 (en) * 2014-09-29 2015-11-19 Edifire LLC Dynamic conference session re-routing in secure media-based conferencing
US9282130B1 (en) 2014-09-29 2016-03-08 Edifire LLC Dynamic media negotiation in secure media-based conferencing

Also Published As

Publication number Publication date
EP1895776A3 (en) 2008-03-19
DE602004010676T2 (de) 2009-01-02
JP4378651B2 (ja) 2009-12-09
DE602004010676D1 (de) 2008-01-24
NO318974B1 (no) 2005-05-30
EP1895776B1 (en) 2015-07-08
NO20033106D0 (no) 2003-07-07
ES2298758T3 (es) 2008-05-16
WO2005004481A1 (en) 2005-01-13
CN100499792C (zh) 2009-06-10
CN1820505A (zh) 2006-08-16
EP1654873A1 (en) 2006-05-10
US20050007446A1 (en) 2005-01-13
EP1654873B1 (en) 2007-12-12
JP2007521753A (ja) 2007-08-02
ATE381210T1 (de) 2007-12-15
EP1895776A2 (en) 2008-03-05

Similar Documents

Publication Publication Date Title
US7456858B2 (en) Distributed MCU
EP1234427B1 (en) A method for controlling several multipoint control units as one multipoint control unit
US8843550B2 (en) System and method for controlling one or more multipoint control units as one multipoint control unit
US10079714B2 (en) Conference call resource assignment for failover
US7830824B2 (en) System and method for providing reservationless third party meeting rooms
EP1269335B1 (en) A system and method for providing reservationless conferencing
CA2293255C (en) Multimedia multipoint telecommunications reservation acceptance systems and controllers
CN1934860B (zh) 一种在电话会议中接纳各参与方的系统和方法
CN100359942C (zh) 视讯会议系统及其管理方法
US8675524B2 (en) Method and apparatus for dynamically allocating resources for large-scale multimedia conferences
CN1199457C (zh) 多个多点控制设备组网系统及使用系统的管理方法
US7522577B2 (en) Automatic call routing

Legal Events

Date Code Title Description
AS Assignment

Owner name: TANDBERG TELECOM AS, NORWAY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHRADER, THIES;DAHL, AXEL;REKKEDAL, MAGNUS;REEL/FRAME:015742/0477

Effective date: 20040623

STCF Information on status: patent grant

Free format text: PATENTED CASE

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

FPAY Fee payment

Year of fee payment: 4

FPAY Fee payment

Year of fee payment: 8

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 12